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    <title>Document</title>
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<body>
    <ul class="ul">
        <li>1</li>
        <li>2.5</li>
        <li>12312</li>
        <li>34.2</li>
        <li>77</li>
        <li>123</li>
        <li>333</li>
        <li>767</li>
        <li>77</li>
        <li>77</li>
    </ul>
</body>
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    let lis = document.querySelectorAll(".ul>li");
    // 把伪数组变为数组
    lis = Array.from(lis);
    let newArray = lis.map(v => Number(v.innerText));
    console.log(newArray);

    let result = newArray.reduce((total,v) => total + v);
    console.log("和的结果：",result);

    let ok = newArray.every(v => v / 100 > 10);
    console.log("除以100都大于10：",ok);
</script>
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